As noted, some national shows have much wider aisles....lots of families bring in small
kids and strollers at those, and, with wide aisles, no problem. Many of us, who may not yet need a walker or a wheelchair, are afraid it is gaining on us in our rearview mirror, due to age, and so try to be tolerant of them, although they take up most of the one way, narrow aisles at York and are difficult to pass...many wheelchairs are driven up the center of the aisle (if I wind up in one, I hope I have sense enough to not do that... but the aisles, again, are not wide). My brother required a wheelchair, so I hope I am tolerant of them. Dealer chairs in aisles, at York, for the same narrow aisle reason, and the fact that dealers cannot sit behind their tables, are at least as much a tripping hazard as strollers. Strollers just add to it. I won't post what I am thinking
when I try to see around a dealer who is standing or sitting in front of what he, presumbably, has brought there to actually sell. All make better doors than windows.